答案1
指令\parbox
将生成您提供的第二张屏幕截图的“外观”。
\documentclass{article}
\begin{document}
\noindent
Eg 1.\
\parbox[t]{0.8\textwidth}{%
a) What is the rate of decrease of its radius \dots\par
b) Find the time taken to reduce the radius of \dots\par
c) Find the time taken to reduce the radius of \dots}
\end{document}
但是,使用tabularx
环境应该可以提供更好的(隐式)列对齐。
\documentclass{article}
\usepackage{tabularx}
\begin{document}
\noindent
\setlength\tabcolsep{3pt} % default value is 6pt
\begin{tabularx}{\textwidth}{@{}llX@{}}
Eg 1.
& a) & What is the rate of decrease of its radius \dots \\
& b) & Find the time taken to reduce the radius of \dots\\
& c) & Find the time taken to reduce the radius of \dots \\
\end{tabularx}
\end{document}
附录回答 OP 的后续问题:再次tabular
强调,使用普通的旧环境似乎是可行的。并且,让 LaTeX 处理增加和减少数字的琐事。:-)
\documentclass{article}
\usepackage{array} % for "\newcolumntype" macro
\newcolumntype{L}{>{$\displaystyle}l<{$}} % automatic math mode
\usepackage{fmtcount} % for "\ordinalnum" macro
\usepackage[T1]{fontenc} % access "\textquotedbl" macro
\newcounter{mynuma}\newcounter{mynumb}
\newcommand{\decnumb}{\setcounter{mynumb}{\numexpr21-\value{mynuma}\relax}}
\newcommand\mymac{\stepcounter{mynuma}\decnumb\ordinalnum{\value{mynuma}}}
\begin{document}
\begin{center}
\setlength\tabcolsep{2pt} % default: 6pt
\begin{tabular}{@{} llrll L @{}}
\mymac & 500 invested for & \themynumb & years & amount to & 500\times1.06^{\themynumb} \\
\mymac & \textquotedbl & \themynumb & years & \textquotedbl & 500\times1.06^{\themynumb} \\
$\vdots$ \addtocounter{mynuma}{16}\\
\mymac & \textquotedbl & \themynumb & years & \textquotedbl & 500\times1.06^{\themynumb} \\
\mymac & \textquotedbl & \themynumb & year & \textquotedbl & 500\times1.06^{\themynumb} \\
\end{tabular}
\end{center}